"Fri, 13 Jun 2025 14:45:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250613
Only TIME
14:45:00
General datetime
2025-06-13 14:45:00Z
For Database
2025-06-13 14:45:00
For HTTP1.1
Fri, 13 Jun 2025 14:45:00 GMT